Emerson EWD7002 Service Manual page 30

AV CBA Top View
1-8-19
CAUTION !
Switching power supply circuit is used in this unit.
If Main Fuse (F1001) is blown, check to see that all components in the
power supply circuit are not defective before you connect the AC plug to the
AC power supply. Otherwise it may cause some components in the power
supply circuit to fail.
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
F
REPLACE ONLY WITH THE SAME TYPE FUSE.
ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES
D'INCELE N'UTILISER QUE DES FUSIBLE DE MEMO TYPE.
A V
RISK OF FIRE-REPLACE FUSE AS MARKED.
"This symbol means fast operating fuse."
"Ce symbole reprèsente un fusible à fusion rapide."
BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER
SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED.
ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT
SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY
CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
AV CBA
Ref No. Position
ICS
IC1001 C-2
IC1002 B-1
IC1003 B-3
IC1006 C-2
IC1201 D-3
IC1402 D-4
IC2001 B-4
TRANSISTORS
Q1001 C-1
Q1002 B-1
Q1003 D-2
Q1004 A-1
Q1005 B-1
Q1006 B-1
Q1007 B-2
Q1008 D-2
Q1011 B-2
Q1014 B-2
Q1201 E-3
Q1202 E-3
Q1203 E-3
Q1204 E-3
Q1351 E-3
CONNECTORS
CN1001 C-5
CN1601 D-5
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